Input: 110-240Vac; Output: 84V 4A. DC Connector Size: 3 Pin Male XLR Plug connector. Energy efficient and stable 84V DC power supply for 72V 20S Li-ion battery pack. Short circuit protection/ over current protection/ over voltage protection. Red light -- charging, green light -- charge OK, it stop automatically when the battery is full. This AC-to-DC regulated switching power adapter converts 110-240VAC to 84VDC, at a maximum output of 4A (336W). PRODUCT SPECIFICATIONS: Input : 110~240V AC 50/60HZ Output : DC 84V 4A Charge Battery type: 72V 20S Li-ion battery DC Connector Size: 3 Pin Male XLR Plug Shell: Aluminum LED Display: Red:Charging Green: Charged fully Before your purchase, please check your original charger and make sure the OUTPUT and CONNECTOR size matches. PACKAGE INCLUDES: 1x Power Charger